Along with Kingdom Come ...Action #775 is quintessential Superman.
I want to give a nod to
Peace on Earth,
Superman for All Seasons,
Superman/Batman - Supergirl,
Superman/Batman - Absolute Power
Superman/Shazam - First Thunder (greatly defined how Supes & Caps relationship should be)

__________________" Again you seek to play the hero, little madman. Again you pay the price!"